This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A096206 #6 Dec 17 2016 10:27:17 %S A096206 1,1,1,1,4,1,27,288 %N A096206 Number of different values taken by the absolute value of the permanent of a Hadamard matrix of order 4n. %Y A096206 Cf. A096201, A096204, A096205. %K A096206 nonn,more %O A096206 0,5 %A A096206 _Ian Wanless_, Jul 29 2004